Please describe the problem:
Downloads that are in progress have the .part extension to signify that they are not complete.

Unfortunately, if the remote server dies for whatever reason (overloaded, etc), the download finishes, and the incomplete file has the .part extension removed.

Since we know the download is incomplete, we should not mark the download as complete by removing the .part extension.

Steps to reproduce:


Actual results:


Expected results:


Does this happen every time?


Other information:
This could either be done by comparing file length with file length returned from the server (if given), or by not renaming files unless the transfer finishes successfully.